| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sewing machine capable of excellently forming stitches like hand-sewn stitches on a sewing object. <P>SOLUTION: The sewing machine includes thread tension adjusting means and transfer means, and uses a bobbin thread with a color different from that of a needle thread to form stitches, in which the needle and bobbin threads are entangled with each other, on a sewing object. The thread tension adjusting means and the transfer means are controlled so that the following first and second stitches are alternately arranged on the sewing object (S70, S80 and S90). The first stitch includes only a stitch in which an entanglement point of the needle and bobbin threads is located below the upper surface of the sewing object. The second stitch includes a stitch in which the entanglement point and the bobbin thread are drawn out to the upper surface of the sewing object by the tension of the needle thread. The second stitch includes a plurality of sets each including a first portion in which the bobbin thread is drawn out in a first direction, and a second portion in which the bobbin thread is drawn out in a second direction, and at least part of which overlaps with the first portion. <P>COPYRIGHT: (C)2012,JPO&INPIT |
